Just had my Mini Cooper S R53 JCW back from the garage today with a new clutch etc.
The car had to be power bled etc to get all air out of the system as the car had no clutch pedal after the new clutch was installed.

Now, when I go out for a drive in my car, turn it off, this fan kicks in?
It never used to before so I'm a bit worried about it!
Is it the coolant level is too low or?

I don't know what I should do really but at one stage for about 20 - 30 seconds, the warning light for the engine overheating did come on!

Check the coolant level, they may have drained the system when working on the clutch and may also have failed to bleed all the air out the cooling system and heater correctly. If so this must be done but it takes time and patience so some mechanics rush the job......